Double-acting spring-hinge.



No. 673,370. Patented Apr. 30, 1901.

A. L. STUMP &. F. BBUCKER.

DOUBLE ACTING SPRING HINGE.

(Application filed Aug. 2, 1900.) (No Model.)

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llllllllllllfllli /v iilllll" UNITED STATES PATENT OFFICE.-

ABRAHAM L. STUMP AND FRANCIS BRUCKER, OFSl-IELBY, OHIO, ASSIGN- OBS TO THE EASY SPRING HINGE COMPANY, OF SAME PLACE.

DOUBLE-ACTING SPRING-HINGE.

SPECIFICATION formingpart of Letters Patent No. 673,370, dated April 30; 1901.

Application filed August 2, 1900.

To all whom it may concern.-

Be it known that we, ABRAHAM L. STUMP and FRANCIS BRUCKER, citizens of the United States, residing at Shelby, Richland county, Ohio, have invented certain new and useful Improvements in Double Acting Spring- Hinges, of which the following is a specification.

Our invention relates to improvements in double-acting spring-hinges.

One object of our invention is to provide a hinge in which the adjustment of thetension of the spring may be easily effected without the removal of the door or any of the parts of the hinge.

A further object is to provide a hinge of such construction as to enable the door to be easily hung and accurately adjusted and as easily taken down.

Another object is to provide a hinge which can be completely inclosed and assembled at the factory and which need not be taken apart by mechanics to accomplish any of the ad-: justments of the hinge in applying the same to the door.

We have aimed also to provide a hinge in which the greatest leverage or holding power will be exerted when the door is in its normal position, thereby holding the door very rigid and preventing its swinging back and forth. The door is further designed to be fitted very close, to stay open when swung back to ap proximately a right angle, and finally, by reason of our improved construction of hinge, any part which is broken or worn can be easily replaced.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a side elevation of a portion of the door and hinge with the side wall of the casing of the hinge removed. Fig. 2 is an end View with the end wall of the casing removed. Fig. 3 is a plan view with the top of the easing removed. Fig. 4 is a sectional view taken along line 5 5 of Fig. 1. Figs. 5, 6, and 7are detail views.

The hinge is intended to be sunk in the floor beneath the lower edge of the door, though not necessarily limited in its application to the lower edge; but ordinarily it will be sufficient to provide a single hinge at the lower of the casing. extended upwardly in the shape of an annu- Serial No. 25,693, (No model.)

corner, the upper corner (not shown) turning on a plain pivot of any desired construction.

The working parts of the hinge are located within a box or casing, preferably watertight, which is sunk into the floor, so thatits cover comes flush with the surface of the floor,the said cover being indicated by the reference-letter a, while the box is indicated by the letter I).

particularly described, a pivot-pin e, which extends down through an opening in the cover The wall of this opening is lar flange f, forming at its upper edge a ballrace, which is overlapped by a cap-piece f, which sustains the weight of the door, balls being interposed, as shown at g in Fig. 1.

.The lower end of the pin carries a plate h, jnon-rotatably secured thereto, preferably by flattening one or more sides of the pin and entering itin a correspondingly-shaped opening in the plate. is swung in either direction the pin 6 will be rotated, thus imparting an oscillating movement to the plate. '72 are projections i, (preferably provided with By this means as the door Depending from the plate antifriction-rollers, as shown,) both of which when the door is in normal position abut against a flange j of a spring-pressed slidej,

while when the plate oscillates with the movement of the door one or the other of said projections will be swung back, thus acting on said flange to move the slide against the tension of the spring.

The spring (indicated at k) is preferably a helical spring arranged longitudinally beneath the slide, the forward end j of the slide being bent or extended down over the end of the spring and preferably provided with a projection j, which holds the two in alinement.

In order to provide for adjusting the spring to increase or decrease the tension on the door, we provide links Z, acting at one end on the end of the spring and being connected at their opposite ends with bell-crank levers 100 0' indicates the door, and 0 6c the door-jamb. A recessed block (1 is secured to or m ortised in the lower corner of the door, :to which is connected, as hereinafter more flush with the surface of the cover and adapted to be operated by a screw-driver or the like, while its lower end may have abearing in ablock p. The bell-cranks m are preferably pivoted on screw-pivots r, threaded into cover orat the side of the box or casing. We prefer to connect the links to a plate 8, hearing on the rear end of the spring.

It is desirable to provide means for adjusting the door after it has been hung so as to make it aline perfectly with the door-opening and also to hold it in place against any undue pressure against the door at this poin't,and

for this purpose we enlarge the upper end of' the pin e, providing it on one side with a rounded portion 6, designed to fit against a corresponding seat in the block d, and on the other side with aflat face 6 block 01 from the face of the door, contact with opposite ends of said flat face, and it will thus be seen that byloosening one screw and tightening the other the relation of the door and plate 71. may be varied and that by loosening both screws the door may be taken down without disturbing any of the parts of the hinge.

In order that the door may be automatically held open when swung back to approximately a right angle, we form a rounded recess j in the face of the flange j, so that as the door reaches such position one of the projections will rest in said recess, and the line of draft being thus approximately on a line with the pivot e the door will be automatically held open.

The block d is preferably covered by ornamental face-plates 15, secured both to the door and plate, whereby additional strength and an improved appearance are secured.

By reason of the raised flange surrounding the pivot-pin and the overlapping edge of the upper journal-plate it will be seen that the entrance of water through the pivot-opening is absolutely prevented.

We find it desirable to provide an additionalholding means in the shape of a pin (1, passing through an opening in the block (1 and engaging a recess in the upper enlarged end of the pin e, as shown more clearly in Adjusting and securing screws :1; 41;, passing through the Fig. 7. The pin is preferably held against accidental raising by a set-screw d and by loosening the set-screw may be lifted into a recess'in the door and the door removed in the manner already described.

Having thus described our invention, what we'claim is lugs 10, depending from the under face of the 1. In combination, the casing, a reciprocating slide therein, a helical spring hearing at one end on said slide, a pivot pin or shaft arranged to rotate with the door and projecting into said casing, means whereby the rotation of said pin. moves the slide against the tension of the spring, and means for varying the tension of the spring, comprising bellcrank levers pivoted in the casing, links connecting the bell-cranks with the opposite end of the spring, and an adjusting-screw extending through the casing and having an operative connection with said bell cranks for rocking the same, substantially as described.

2. In combination, with a door, a casing, a reciprocating slide therein, ahelical spring hearing at one end on said slide, means whereby the rotation of the door moves said I slide against the tension of the spring, bellcranks pivoted in the casing, links connecting the bell-cranks with the opposite end of the spring, an adjusting screw extending through the casing, a block carried by said adjusting-screw, and pins projecting from said block and engaging slots in the opposite arms of said bell-cranks, substantially as described.

3. In combination, with a door, a casing, a reciprocating slide therein, a spring acting thereon, a pivot-pin secured to the door and projecting into the casing, means whereby the rotation of said pin imparts movement to the slide, an annular flange on said casing around said pin, a cap-piece encircling said pin and having depending edges overlapping said flange, and balls interposed between said flange and cap-piece, substantially as described.

In testimony whereof we affix our signatures in presence of two witnesses.

ABRAHAM L. STUMP. FRANCIS BRUCKER.

Witnesses:

CHAS. NASH, MARY KOCHENDERFER. 

